Solution idea startup times wrong: Java 1.8 or later is Required.__java

The Jre7 and Jre8 are installed under Ubuntu, and when you use Update-alternatives--config java to set the default JRE to Jre7, start idea Error: * * * Java 1.8 or later is required.

You can use Update-alternatives--config java to set the default JRE to Jre8, but my Java project needs to be compiled and run in JDK7 environment.

After testing, you can let idea run under Jre8 without changing the system's default JRE (Jre7).

If it is a 64-bit jdk8, then: Export IDEA_JDK_64=[JDK8 Installation path]

If it is a 32-bit jdk8, then: Export IDEA_JDK=[JDK8 Installation path]

Then you can start idea on it.